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Poro-Cav Lintels

Keystone Poro-Cav Lintels combine structural support with an innovative thermal break design to help improve thermal performance in cavity wall construction.

Ask for a Keystone Engineer to visit your site or office.

Our technical team will provide lintel solutions for all your structural steel requirements.

The Poro-Cav Lintel features a unique, patented thermal break plate designed to enhance thermal performance while providing effective support to both leaves of the cavity wall.

The inner leaf is supported by a standard Keystone Box lintel with factory-fitted lateral restraint clips. A separately designed outer lintel supports the outer leaf and clips easily into position using the lateral restraint clips fixed to the inner Box lintel.

This two-part system provides resistance to rotation during loading on site, while the thermal break plate helps reduce the path for heat transfer through the lintel.

Available for 100mm and 140mm inner leaf construction, Poro-Cav Lintels provide a practical solution where both structural support and thermal performance need to be considered.

2 products available
Product Outer leaf Cavity range Inner leaf Loading conditions Max length
PCI/K-100
PCI/K-100
— — 100 Standard 3,000 View
PCI/K-140
PCI/K-140
— — 140 Standard 3,000 View

Technical Resources

Your trusted source for detailed product information, technical guidance, and downloadable resources to support every stage of your build.
  • Lintel Specification Guide

    Download the Specification Brochure for detailed product information, technical guidance, and expert support.
    Download
  • CE DoP

    Access the Keystone CE Declaration of Performance (DoP) to view certified product performance data and compliance information.
    Download
  • Datasheets

    Download Keystone Lintel datasheets for all specifications, installation and handling & storage details.
    Datasheets
  • BBA Certificates

    Download the Keystone BBA Certificates to verify independent accreditation of product quality, performance, and compliance.
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  • CAD Files

    Download Keystone CAD files for precise, ready-to-use technical drawings to support your project design and planning.
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  • UKCA DoP

    Access the Keystone UKCA Declaration of Performance (DoP) to view certified product performance data and compliance information.
    Download

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